check engine light CHEVROLET TAHOE 1995 1.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine There is an air bag readiness light on the instrument panel, which shows
AIR
BAG. The system checks the air bag’s electrical system for
malfunctions. The light tells you if there is an electrical problem. See “Air
Bag Readiness Light” in the Index for more information.
How the Air Bag System Works
Where is the air bag?
The driver’s air bag is in the middle of the steering wheel.
1-30

Downloaded from www.Manualslib.com manuals search engine NOTICE:
Your engine is designed to work with the electronics in your
vehicle.
If you add electrical parts or accessories, you could
change the way the fuel injection system operates. Before addin\
g electrical equipment, check with your dealer.
If you don’t, your
engine might not perform properly.
If you ever have to have your vehicle towed, see the part of this
manual that tells how to do it without damaging your vehicle.
See “Towing Your Vehicle” in the Index.
Driving Through Deep Standing Water
NOTICE:
If you drive too quickly through deep puddles or standing water,
water can come in through your engine’s air intake and badl\
y
damage your engine. Never drive through water that is slightly \
lower than the underbody of your vehicle. If you can’t avoid
deep puddles
or standing water, drive through them very slowly.
Driving In Snow (Diesel Engines)
When driving in a heavy snowstorm or in swirling snow with a diesel
engine, snow can get into the air intake system.
If you keep driving in these
conditions the air cleaner may get plugged, causing black smoke and loss
of
power. In an emergency, if the air cleaner gets plugged with snow, you can
remove the air cleaner. Then, drive to
a place of safety as soon as possible
and put
the air cleaner back on.
Starting Your Diesel Engine
Your diesel engine starts differently than a gasoline engine.
1. Move your shift lever to PARK (P) or NEUTRAL (N). Your engine
won’t start
in any other position - that’s a safety feature. To restart
when you’re already moving, use NEUTRAL
(N) only.
2-1 5

Downloaded from www.Manualslib.com manuals search engine How long should you keep the coolant heater plugged in? The answer
depends
on the weather, the kind of oil you have, and some other things.
Follow this chart.
Viscosity/
Oil Grade
SAE
low-30
SAE
15W40
32°F to 0°F
(OOC to -18OC)
Not
Required
Not
Required
0°F to -10°F
(-18” c to
-23 O C)
Two
Hours*
Two
Hours*
Below -10°F
Below
-23 O C
Eight Hours*
or Overnight
Eight Hours*
or Overnight
*The times listed are minimum times.
It will not harm either the coolant
heater or
the vehicle to leave the coolant heater plugged in longer than the
times stated.
See “Diesel Fuel Requirements and
Fuel System” in the Index for
information
on what fuel to use in cold weather.
lf Your Diesel Engine Won’t Start
If you’ve run out of fuel, look at “Running Out of Fuel” (see “Diesel Fuel
Requirements and Fuel System” in the Index).
If you’re
not out of fuel, and your engine won’t start, do this:
Turn your ignition
key to RUN. Make sure that the GLOW PLUGS light is
out. Then IMMEDIATELY
turn the ignition key to START.
If the light doesn’t go off, wait a few seconds, then try starting your engine
again. And, see your dealer
as soon as you can for a starting system check.
If the light comes
on and then goes off and you know your batteries are
charged, but your engine still
won’t start, your vehicle needs service.
If the light does
not come on when the engine is cold, your vehicle needs
service.
If your batteries don’t have enough charge to start your engine, see
“Battery”
in the Index.
Be sure you have the right oil for your engine, and that you’ve changed
the
oil at the proper times. If you use the wrong oil, your engine may be harder
to start.
If the engine starts, runs a short time, then stops, your vehicle needs service.
2-18

Downloaded from www.Manualslib.com manuals search engine The front axle portion
of
the indicator
diagram will light up
when you shift into
four-wheel drive.
Some delay between shifting and the indicator's lighting is normal.
If the
indicator light does
not light up, or if the front axle light does not go out
after you shift out of four-wheel drive, have your dealer check your system.
When your headlamps or parking lamps are
on, rotate the thumb wheel next
to the headlamp switch up to brighten, or down to dim, your transfer case
indicator light.
0
0
0
0
2-WHEEL HIGH (2H)
This setting
is for driving in most street and highway situations. Your
front axle
is not engaged in two-wheel drive.
4-WHEEL HIGH (4H)
This setting engages your front axle to help drive your vehicle. Use 4H
when
you need extra traction, such as on wet or icy roads, or in most
off-road situations.
NEUTRAL
(N)
Shift to this setting only when your vehicle needs to be towed or when
using
a power take-off.
4-WHEEL LOW (4L)
This setting
also engages your front axle to give you extra power, but
should be used only for off-road driving.
You can shift from 2-WHEEL HIGH (2H) to 4-WHEEL HIGH (4H) or
from 4-WHEEL HIGH (4H) to 2-WHEEL HIGH (2H) while the vehicle
is
moving. Your front axle will engage faster if you take your foot off of the
accelerator for
a few seconds after you shift. In extremely cold weather it
may be necessary to stop or slow the vehicle to shift out of 2-WHEEL
HIGH (2H).
2-34

Downloaded from www.Manualslib.com manuals search engine For a single wiping cycle, turn the band to MIST. Hold it there until the
wipers start, then let go. The wipers will stop after one cycle. If you want
more cycles, hold the band
on MIST longer.
You can set the wiper speed for a long or short delay between wipes. This
can be very useful in light rain or snow. Turn the band to choose the delay
time. The closer
to LOW, the shorter the delay.
For steady wiping at low speed,
turn the band to the LOW position. For high
speed wiping, turn the band further, to
HIGH. To stop the wipers, move the
band to the off symbol.
Remember that damaged wiper blades may prevent
you from seeing well
enough to drive safely.
To avoid damage, be sure to clear ice and snow from
the wiper blades before using them.
If they are frozen to the windshield,
carefully loosen or thaw them.
If your blades do become damaged, get new
blades
or blade inserts.
Heavy snow or ice can overload your wipers. The windshield wiper motor is
protected from overload by a circuit breaker and
a fuse. If the motor
overheats due to heavy snow, etc.,
the wiper will stop until the motor cools.
Although the circuit is protected from electrical overload, overload due
to
heavy snow, etc. may cause wiper linkage damage. Always clear ice and
heavy snow from the windshield before using your windshield wipers.
Windshield Washer
At the top of the lever
there’s a paddle with
the word PUSH on it.
To spray washer fluid
on the windshield,
push the paddle.
Washer fluid will spray as long as
you push the paddle. When you let go of
the paddle, the wipers will continue to wipe for a few seconds and then
either stop or return to the preset speed.
Driving without washer fluid can be dangerous.
A bad mud splash can block
your vision. You
could hit another vehicle or go off the road. Check your
washer fluid level often.
2-42

Downloaded from www.Manualslib.com manuals search engine To Erase Speed Memory
When you turn off the Cruise Control or the ignition, your Cruise Control
set speed memory
is erased.
Headamps and Vehicle Lighting
Your parWheadlamp
switch
is on the
drivers side
of your
instrument panel.
Rotate
the switch knob clockwise to the park lamp symbol to turn on:
Parking Lamps
Sidemarker Lamps
Clearance Lamps (if you have them}
Taillamps
License Plate Lamps
0 Instrument Panel Lights
0 Transfer Case Shift Indicator Light (four-wheel drive vehicles)
Rotate
the switch knob clockwise again to the master lighting symbol to
turn on all the lamps and lights listed above as well as the headlamps.
Rotate the switch counterclockwise to the off sylnbol to turn
off your lamps
and lights.
Rotate the thumb wheel
next to the switch knob up to adjust instrument
panel lamps. Rotate the thumb wheel up to the first notch to return
the radio
display and gearshift indicator LED display
to full intensity when the
headlamps or parklamps are on.
You can switch your headlamps from high to low beam by pulling on the
turn signal/high beam lever.
A circuit breaker protects your headlamps. If you have an electrical
overload, your headlamps
will flicker on and off. Have your headlamp
wiring checked right away
if this happens.
2-48

Downloaded from www.Manualslib.com manuals search engine Rear Window Wiper and Washer
Some visors have
mirrors with lights. If
the mirror has lights,
they will come on
when
you lift the
mirror cover.
The rear window wipedwasher switch
is on your instrument
panel, to
the passenger
side
of the gage
cluster.
To turn the wiper
on, slide the switch all the way up.
For delay wiping, slide the switch even with
DELAY in the center position
of the rear wiper control. The wiper will cycle every nine seconds.
To wash the window, push in on the switch. Window washer fluid will
continue to spray until the switch is released. The wiper will continue with
three more wipes and then return
to the setting that was chosen before the
lever was pushed.
The rear window washer uses
the same fluid bottle as the front windshield
washer.
If the fluid level is low in the washer fluid bottle, you may not be
able to wash your rear window.
If you can wash your windshield, but not
your rear window, check the fluid level.
2-56

Downloaded from www.Manualslib.com manuals search engine Tachometer
Your tachometer
displays the engine
speed in revolutions
per minute (rpm).
I NOTICE:
Do not operate the engine with the tachometer in the red area,
your engine or other parts could be damaged.
Damage to your engine
or vehicle caused by operating the
engine in the red area isn’t covered
by your vehicle warranty.
Warning Lights and Indicators
This part describes the warning lights and gages that may be on your
vehicle. The pictures will help
you locate them.
Warning lights and gages
can signal that something is wrong before it
becomes serious enough to cause an expensive repair or replacement.
Paying attention
to your warning lights and gages could also save you or
others from injury.
Warning lights come on when there may be or is a problem with
one of your
vehicle’s functions.
As you will see in the details on the next few pages,
some warning lights come
on briefly when you start the engine just to let
you know they’re working. If you are familiar with this section, you should
not be alarmed when
this happens.
Gages can indicate when there may be
or is a problem with one of your
vehicle’s functions. Often gages and warning lights work together
to let you
know when there’s a problem with your vehicle.
When one
of the warning lights comes on and stays on when you are
driving, or when one of the gages shows there may be a problem, check the
section that tells
you what to do about it. Please follow this manual’s advice.
Waiting
to do repairs can be costly - and even dangerous. So please get to
know your warning lights and gages. They‘re a big help.
2-69

Downloaded from www.Manualslib.com manuals search engine Safety Belt Reminder Light
When the key is turned to RUN or START, a tone will come on for about
eight seconds to remind people to fasten their safety belts, unless the
driver’s safety belt is already buckled. The safety belt light will also come
on and stay on for about 20 seconds, then it will flash for about 55 seconds.
If the driver’s belt is already buckled, neither the tone nor the light will
come on.
Air Bag Readiness Light
There is an air bag readiness light on the instrument panel, which shows
AIR BAG. The system checks the air bag’s electrical system for
malfunctions. The light tells you
if there is an electrical problem. The
system check includes the air bag sensors and module, the wiring and the
diagnostic module. For more information
on the air bag system, see “Air
Bag” in the Index.
2-70

Downloaded from www.Manualslib.com manuals search engine Water in Fuel Light
WATER
IN
FUEL
This red light will come on to warn you if there is water in the diesel fuel
system. For more information
on how this light works, see “Diesel Fuel
Requirements and Fuel System” in the Index.
Service Throttle Soon Light
SERVICE
THROTTLE
SOON
On diesel engines, a computer monitors the operation of the electronic
accelerator.
As a check to show you it’s working, this orange light comes on
for a few seconds after the ignition is turned on. Normally, it will not come
back on unless the ignition has been off for 30 seconds or more. If the light
does not come on at
all, and the ignition has been off for 30 seconds or
more, have the light fixed right away.
If the light stays on after the engine
starts, or comes on while
you are driving, the computer is indicating that
your vehicle
has a problem. You should take your vehicle in for service
soon.
2-73